฿19,512+ Cheap flights to Portsmouth

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/3. Fares are subject to change and may not be available on all flights or dates of travel.
— LHR
31 Jan — 7 Feb1
1 adult
1 adult, Economy, 0 bags

Flights to Portsmouth in 2026

Enter your travel dates to find the best prices.

Best flights to Portsmouth
Discover carefully curated flight deals to Portsmouth that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 1 January 2026.

Wed 1/409:15BKK - SOU
2 stops40h 15mQatar Airways
Wed 8/409:10SOU - BKK
2 stops22h 15mQatar Airways
Deal found 31/12฿38,551
Sun 25/103:00BKK - SOU
2 stops23h 40mQatar Airways
Wed 28/112:25SOU - BKK
2 stops35h 15mQatar Airways
Deal found 31/12฿45,013
Wed 20/520:35BKK - SOU
2 stops28h 55mQatar Airways
Wed 27/520:00SOU - BKK
2 stops29h 05mQatar Airways
Deal found 31/12฿54,123
Tue 31/309:15BKK - SOU
2 stops40h 15mQatar Airways
Wed 8/409:10SOU - BKK
2 stops27h 55mQatar Airways
Deal found 30/12฿117,891

Find flight deals to Portsmouth

Find the latest flights to Portsmouth in 2026, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 17,341 searches and data was last updated on 1 January 2026.

Return from

฿19,228

One-way from

฿19,512

Popular in

January

Cheapest in

November

Average price

฿32,247
29/1-5/2
  • 29/1-5/2
  • 5 total stops
  • 78h 10m total
  • Bangkok to London
Search Deals
Qatar Airways
  • Qatar Airways
  • 9/3
  • 2 total stops
  • 26h 05m total
  • Bangkok to Portsmouth
Search Deals
Highest demand for flights based on searches. 2% potential increase in price (฿606 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 0% potential price decrease (฿277 potential savings vs. average return price).
Search Deals
Average for return flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Locate flights to Portsmouth that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 17,341 searches and data was last updated on 1 January 2026.
Use the filters below to find and compare flights to Portsmouth that are best for you.

Fly from

Bangkok

Route

Depart

Return

Price

BangkokSouthampton

BKK - SOU

BKKSOU

Bangkok Suvarnabhumi

Wed 1/4

09:15-19:30

2 stops40h 15m

Southampton Eastleigh

Wed 8/4

09:10-13:25

2 stops22h 15m

฿38,551

BangkokSouthampton

BKK - SOU

BKKSOU

Bangkok Suvarnabhumi

Sun 25/1

03:00-19:40

2 stops23h 40m

Southampton Eastleigh

Wed 28/1

12:25-06:40

2 stops35h 15m

฿45,013

BangkokSouthampton

BKK - SOU

BKKSOU

Bangkok Suvarnabhumi

Wed 20/5

20:35-19:30

2 stops28h 55m

Southampton Eastleigh

Wed 27/5

20:00-07:05

2 stops29h 05m

฿54,123

BangkokSouthampton

BKK - SOU

BKKSOU

Bangkok Suvarnabhumi

Tue 31/3

09:15-19:30

2 stops40h 15m

Southampton Eastleigh

Wed 8/4

09:10-19:05

2 stops27h 55m

฿117,891

BangkokSouthampton

BKK - SOU

BKKSOU

Bangkok Suvarnabhumi

Mon 9/3

20:30-15:35

2 stops26h 05m

฿19,512

BangkokSouthampton

BKK - SOU

BKKSOU

Bangkok Suvarnabhumi

Sun 8/3

18:55-19:40

2 stops31h 45m

฿20,331

BangkokSouthampton

BKK - SOU

BKKSOU

Bangkok Suvarnabhumi

Thu 5/3

03:00-16:20

2 stops20h 20m

฿28,874

BangkokSouthampton

BKK - SOU

BKKSOU

Bangkok Suvarnabhumi

Wed 4/3

18:55-15:35

2 stops27h 40m

฿30,481

BangkokSouthampton

BKK - SOU

BKKSOU

Bangkok Suvarnabhumi

Tue 3/3

20:30-15:35

2 stops26h 05m

฿30,481

BangkokSouthampton

BKK - SOU

BKKSOU

Bangkok Suvarnabhumi

Sat 7/3

18:55-19:40

2 stops31h 45m

฿32,877

Flights are sorted by cheapest return flights first.

Deals found on 30/12

Best time to book a flight to Portsmouth

Have a flexible travel schedule? Discover the best time to fly to Portsmouth with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight to Portsmouth

How long is the flight to Portsmouth?

On average, a flight from Bangkok to Portsmouth takes 30 hours 10 minutes. Flights to Portsmouth from other popular cities in Thailand will vary in length. Below are a few examples of popular routes and their flight times.

Weekly flight availability to Portsmouth

The most flights from Bangkok to Portsmouth are scheduled on a Monday (6 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (6 on average).

Rainfall in Portsmouth by month

Plan your trip to Portsmouth by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Portsmouth ranges from 25.0 - 76.0 mm per month. December is typically the wettest month, when rainfall can reach 76.0 mm. July is typically the driest time to visit Portsmouth when rainfall is around 25.0 mm.

Temperature in Portsmouth by month

Plan your trip to Portsmouth by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Portsmouth, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 18.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 4.0 C).

FAQs about flying to Portsmouth

  • Can I find cheaper flights to Portsmouth if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Portsmouth on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Portsmouth?

    Based on reviews from Cheapflights users, คูเวตแอร์เวย์ is rated the highest out of the airlines that fly to Portsmouth.

  • How much is a return flight to Portsmouth?

    A return flight to Portsmouth will typically cost around ฿9,505, however they can be found for as little as ฿8,196.

  • Where does the fastest flight to Portsmouth depart from?

    For those looking to save time traveling to Portsmouth, Bangkok offers the quickest one-way flight (30 hours 10 minutes).

  • Does London Heathrow have rental cars?

    Yes. Those touching down at London Heathrow can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to London Heathrow?

    Yes. London Heathrow has hotels nearby for those requiring accommodations. Aerotel London Heathrow is the closest property to London Heathrow (0.0 km away from London Heathrow).

See more FAQs

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